What it means
iCloud Private Relay is an iCloud+ privacy feature designed to protect Safari browsing from a single party observing both identity and destination. A VPN usually routes device traffic through one VPN provider under its own policy. Neither makes a signed-in website forget who you are.
A real-world example
A traveler enables Private Relay and uses Safari, then assumes a separate game app uses the same relays. That assumption may be wrong because traffic coverage is not identical.
What to do
Check the Private Relay subscription and active network state for Safari use. For an employer VPN or an app-specific requirement, follow its separate documentation.
The distinction that matters
Private Relay may be unavailable by region or restricted on a network. Apple says Limit IP Address Tracking can disable it for a Wi-Fi network, illustrating why a global account toggle alone is insufficient evidence.
Apple's Private Relay overview Apple's network controls